反应详情

To 1.44 g (3.17 mmol) of alpha-oxo-4-[(12-phenoxydodecyl)oxy]benzeneacetic acid ethyl ester in 100 ml of hot methanol was added 3.5 ml (3.5 mmol) of 1N NaOH. The mixture was heated on a steam bath for 5 minutes, water (20 ml) was added and the solvents were removed at reduced pressure. Water (100 ml) and 7.0 ml of 1.0N HCl were added to the residue and the product was extracted with methylene chloride-THF (4:1). The dried extract was concentrated at reduced pressure to a solid which was recrystallized from acetone-hexane to give 1.14 g (84% yield, mp 98°-100°) of alpha-oxo-4-[(12-phenoxydodecyl)oxy]benzeneacetic acid

1. temperatureThe mixture was heated on a steam bath for 5 minutes
2. customthe solvents were removed at reduced pressure
3. additionWater (100 ml) and 7.0 ml of 1.0N HCl were added to the residue
4. extractionthe product was extracted with methylene chloride-THF (4:1)
5. extractionThe dried extract
6. concentrationwas concentrated at reduced pressure to a solid which
7. customwas recrystallized from acetone-hexane